286642 has 8 divisors (see below), whose sum is σ = 432432. Its totient is φ = 142500.

The previous prime is 286633. The next prime is 286651. The reversal of 286642 is 246682.

It is an interprime number because it is at equal distance from previous prime (286633) and next prime (286651).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a nialpdrome in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 286642.

It is an unprimeable number.

286642 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217 + ... + 787.

It is an arithmetic number, because the mean of its divisors is an integer number (54054).

2²⁸⁶⁶⁴² is an apocalyptic number.

286642 is a deficient number, since it is larger than the sum of its proper divisors (145790).

286642 is a wasteful number, since it uses less digits than its factorization.

286642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 824.

The product of its digits is 4608, while the sum is 28.

The square root of 286642 is about 535.3895777843. The cubic root of 286642 is about 65.9345847112.

It can be divided in two parts, 28 and 6642, that added together give a triangular number (6670 = T₁₁₅).

The spelling of 286642 in words is "two hundred eighty-six thousand, six hundred forty-two".